Connect public, paid and private patent data with Google Patents Public Datasets

Golf ball with high coefficient of restitution

Download PDF

Info

Publication number
US6932721B2
US6932721B2 US10604430 US60443003A US6932721B2 US 6932721 B2 US6932721 B2 US 6932721B2 US 10604430 US10604430 US 10604430 US 60443003 A US60443003 A US 60443003A US 6932721 B2 US6932721 B2 US 6932721B2
Authority
US
Grant status
Grant
Patent type
Prior art keywords
golf
ball
core
feet
cor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US10604430
Other versions
US20040121854A1 (en )
Inventor
Michael S. Yagley
Steven S. Ogg
Pijush K. Dewanjee
David M. Bartels
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Callaway Golf Co
Original Assignee
Callaway Golf Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/02Special cores
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/0023Covers
    • A63B37/0029Physical properties
    • A63B37/0031Hardness
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/0023Covers
    • A63B37/0029Physical properties
    • A63B37/0033Thickness
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/0038Intermediate layers, e.g. inner cover, outer core, mantle
    • A63B37/004Physical properties
    • A63B37/0043Hardness
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/0038Intermediate layers, e.g. inner cover, outer core, mantle
    • A63B37/004Physical properties
    • A63B37/0045Thickness
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/005Cores
    • A63B37/006Physical properties
    • A63B37/0064Diameter
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/005Cores
    • A63B37/006Physical properties
    • A63B37/0065Deflection or compression
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/007Characteristics of the ball as a whole
    • A63B37/0077Physical properties
    • A63B37/0078Coefficient of restitution
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/007Characteristics of the ball as a whole
    • A63B37/0077Physical properties
    • A63B37/0084Initial velocity

Abstract

The present invention is a golf ball that has a coefficient of restitution at 143 feet per second that is greater than 0.8015, and an USGA initial velocity less than 255.0 feet per second. The golf ball is preferably a solid three-piece golf ball with a thermosetting polyurethane cover, an ionomer blend intermediate layer and a polybutadiene core.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a continuation application of U.S. patent application Ser. No. 10/063,861, filed on May 20, 2002, now U.S. Pat. No. 6,595,872, which is a continuation application of U.S. patent application Ser. No. 09/682,792 filed on Oct. 19, 2001, now U.S. Pat. No. 6,478,697, which is a continuation-in-part application of U.S. patent application Ser. No. 09/877,651 filed on Jun. 8, 2001, now U.S. Pat. No. 6,443,858, which is a continuation-in-part application of U.S. patent application Ser. No. 09/710,591 filed on Nov. 11, 2000, now U.S. Pat. No. 6,422,954, which is a divisional application of U.S. patent application Ser. No. 09/361,912 filed on Jul. 27, 1999, now U.S. Pat. No. 6,190,268.

FEDERAL RESEARCH STATEMENT

[Not Applicable]

BACKGROUND OF INVENTION

1. Field of the Invention

The present invention relates to a golf ball. More specifically, the present invention relates to a solid three-piece golf ball with a relatively thin cover, a high core compression, a high cover hardness and an initial velocity limited to less than 255 feet per second.

2. Description of the Related Art

The Rules of Golf, as set forth by the United States Golf Association (“USGA”) and the Royal and Ancient Golf Club of Saint Andrews, have placed controls on the construction and performance of golf balls. The golf ball rules require that the golf ball have a diameter no less than 1.68 inches (42.67 mm), a weight no more than 1.620 ounces avoirdupois (45.93 g), spherical symmetry, an overall distance no greater than 296.8 yards (the limit is 280 yards, or 256 m, plus a six percent tolerance for the total distance of 296.8 yards), and an initial velocity no greater than 255.0 feet per second (the limit is 250 feet or 76.2 m, per second with a two percent maximum tolerance that allows for an initial velocity of 255 feet per second) measured on a USGA approved apparatus.

The initial velocity test is comprised of a large 275 pound wheel that rotates around a central axis at a rate of 143.8 feet per second (striker tangential velocity) and strikes a stationary golf ball resting on a tee. The wheel has a flat plate that protrudes during its final revolution prior to impact with the golf ball. The ball's velocity is then measured via light gates as it travels approximately six feet through an enclosed tunnel. Balls are kept in an incubator at a constant temperature of 23 degrees Celsius for at least three hours before they are tested for initial velocity performance. To test for initial velocity, balls are placed on a tee and hit with the metal striker described above. Twenty-four balls of a particular type make up one test. Each ball is hit with the spinning wheel a total of four times. The highest and lowest recorded velocities are eliminated and the remaining two velocities are averaged to determine the ball speed for that specific ball. The individual speeds of the 24 balls in the group are then averaged, and that is considered the mean initial velocity (IV) of the group for the test.

For USGA conformance purposes, a ball with a mean initial velocity of less than 255.0 feet per second is considered conforming to the USGA Rule of Golf and can be played in sanctioned events. For reference to USGA Wheel Test see USGA web-site at www.usga.com, or reference U.S. Pat. No. 5,682,230 for further information.

Generally speaking, the USGA IV test is designed to be a consistent measurement tool capable of regulating the speed (and ultimately distance) of golf balls. It is commonly known in the industry that golf ball manufacturers perform a simpler test on prototype golf balls and then attempt to correlate the results to the USGA Wheel Test. One type of correlation test is the Coefficient of Restitution (“COR”) test, which consists of firing a golf ball from a cannon into a fixed plate and taking the ratio of outgoing velocity to incoming velocity.

The Coefficient of Restitution is the ratio of the velocity of separation (Vout1-Vout2) to the velocity of approach (Vin1-Vin2), where COR=(Vout1-Vout2)/(Vin1-Vin2. The value of COR will depend on the shape and material properties of the colliding bodies. In elastic impact, the COR is unity and there is no energy loss. A COR of zero indicates perfectly inelastic or plastic impact, where there is no separation of the bodies after collision and the energy loss is a maximum. In oblique impact, the COR applies only to those components of velocity along the line of impact or normal to the plane of impact. The coefficient of restitution between two materials can be measured by making one body many times larger than the other so that m2 (mass of larger body) is infinitely large in comparison to m1 (mass of the smaller body). The velocity of m2 is unchanged for all practical purposes during impact and COR=Vout/Vin.

One particular type of COR test device that is commonly used in the golf ball industry is the ADC COR machine developed by Automated Design Corporation. Based on the definition of COR above, m2 is a large 400 lb plate fixed vertically that the ball (m1) is fired into. The impact of golf ball to large fixed plate is an oblique impact. Software developed by Automated Design Corporation accurately calculates the normal velocities given the dimensions of the machine and outputs a value for Coefficient of Restitution as defined above.

U.S. Pat. No. 5,209,485, filed in 1991, discloses a restricted flight golf ball that has a reduced COR. However, the '485 patent also discloses, for comparison purposes, that the TOP FLITE®XL golf balls, manufactured and sold by Spalding had a COR value of 0.813 when fired at a speed of 125 feet per second. The '485 patent also discloses that the Spalding SUPER RANGE golf ball had a COR value of 0.817 when fired at a speed of 125 feet per second. However, the SUPER RANGE golf ball was a non-conforming golf ball and thus had an IV value greater than 255 feet per second.

U.S. Pat. Number 5,803,831, filed in 1996 discloses in Table 14 a finished solid three-piece golf ball that has a COR of 0.784 at a speed of what is believed to be 125 feet per second. However, the prior art golf balls fail to provide a golf ball that conforms to the USGA IV limit of 255 feet per second while having a high COR.

SUMMARY OF INVENTION

The present invention provides a solution to the problem of adhering to the USGA initial velocity limit of 255 feet per second for a golf ball while increasing the distance a golf ball travels when struck with a golf club. The solution is a solid three-piece golf ball with a high PGA compression core and a thin cover that adheres to the USGA initial velocity limit.

One aspect of the present invention is a golf ball with a core, an intermediate layer, and a cover having a thickness ranging from 0.015 inch to 0.044 inch, wherein the golf ball has a coefficient of restitution at 143 feet per second greater than 0.8015, and an USGA initial velocity less than 255.0 feet per second.

Another aspect of the invention is a golf ball that includes a core composed of a polybutadiene blend, an intermediate layer disposed about the core, a cover disposed over the intermediate layer, and wherein the golf ball has a co-efficient of restitution at 143 feet per second greater than 0.7964, and an USGA initial velocity less than 255.0 feet per second. The intermediate layer is composed of a blend of ionomers, and the cover is composed of a thermosetting polyurethane material. The core has a PGA compression ranging from 75 points to 120 points.

Yet another aspect of the present invention is a golf ball that includes a core, an intermediate layer disposed about the core, and a cover disposed over the intermediate layer. The solid core is composed of a polybutadiene blend, has a PGA compression ranging from 90 points to 100 points, and has a diameter ranging from 1.45 inches to 1.55 inches. The intermediate layer is disposed about the core, is composed of a blend of ionomers, has a Shore D hardness ranging from 55 points to 75 points as measured on the curved surface of the intermediate layer, and has a thickness ranging from 0.040 inch to 0.09 inch. The cover is disposed over the intermediate layer, is composed of a thermosetting polyurethane material, and has a thickness ranging from 0.015 inch to 0.044 inch. The golf ball has a coefficient of restitution at 143 feet per second greater than 0.7964, and an USGA initial velocity less than 255.0 feet per second. The golf ball also has a ball Shore D hardness ranging from 50 points to 75 points as measured on the surface of the golf ball.

Having briefly described the present invention, the above and further objects, features and advantages thereof will be recognized by those skilled in the pertinent art from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a cross-sectional view of a solid three-piece golf ball.

FIG. 2 is a graph of the outgoing speed (y-axis) versus the incoming speed (x-axis) to demonstrate the curve fitting operation for determining the COR of the golf ball of the present invention.

DETAILED DESCRIPTION

As shown in FIG. 1, a golf ball of the present invention is generally designated 10. The golf ball 10 has a coefficient of restitution at 143 feet per second greater than 0.7964, and an USGA initial velocity less than 255.0 feet per second. The golf ball of FIG. 1 is a solid three-piece golf ball 10 having a core 12, a cover 14 and an intermediate layer 16. However, those skilled in the pertinent art will recognize that other golf balls may be utilized without departing from the scope and spirit of the present invention.

The surface geometry of the golf ball 10 is preferably a conventional dimple pattern such as disclosed in U.S. Pat. No. 6,224,499 for a Golf Ball With Multiple Sets Of Dimples, which pertinent parts are hereby incorporated by reference. Alternatively, the surface geometry of the golf ball 10 has a non-dimple surface geometry such as disclosed in U.S. Pat. No. 6,290,615, filed on Nov. 18, 1999 for A Golf Ball Having A Tubular Lattice Pattern, which pertinent parts are hereby incorporated by reference.

The golf ball 10 is finished with either a very thin (microns in thickness) single top coating, or is painted with one or more base coats of paint, typically white, before application of a clear coat. The material of the cover 14 may be doped for coloring, as is well known in the art.

The core 12 of the golf ball 10 is the “engine” for the golf ball 10 such that the inherent properties of the core 12 will strongly determine the initial velocity and distance of the golf ball 10. A higher initial velocity will usually result in a greater overall distance for a golf ball. However, the initial velocity and overall distance of a golf ball must not exceed the USGA and R&A limits in order to conform to the Rules of Golf. Therefore, the core 12 for a USGA approved golf ball is constructed to enable the golf ball 10 to meet, yet not exceed, these limits.

The COR is a measure of the resilience of a golf ball. A golf ball having a COR value closer to 1 will generally correspond to a golf ball having a higher initial velocity and a greater overall distance. In general, a higher compression core will result in a higher COR value.

The core 12 of the golf ball 10 is generally composed of a blend of a base rubber, a cross-linking agent, a free radical initiator, and one or more fillers or processing aids. A preferred base rubber is a polybutadiene having a cis-1,4 content above 90%, and more preferably 98% or above.

The use of cross-linking agents in a polybutadiene core is well known, and metal acrylate salts are examples of such cross-linking agents. Metal salt diacrylates, dimethacrylates, or mono(meth)acrylates are preferred for use in the core 12 of the golf ball 10 of the present invention, and zinc diacrylate is a particularly preferred cross-linking agent. A commercially available suitable zinc diacrylate is SR-416 available from Sartomer Co., Inc., Exton, Pa. Other metal salt di- or mono- (meth)acrylates suitable for use in the present invention include those in which the metal is calcium or magnesium. In the manufacturing process it may be beneficial to pre-mix some cross-linking agent(s), such as zinc diacrylate with the polybutadiene in a master batch prior to blending with other core components.

Free radical initiators are used to promote cross-linking of the base rubber and the cross-linking agent. Suitable free radical initiators for use in the core 12 of the golf ball 10 of the present invention include peroxides such as dicumyl peroxide, bis-(t-butyl peroxy) diisopropyl benzene, t-butyl perbenzoate, di-t-butyl peroxide, 2,5-dimethyl-2,5-di-5-butylperoxy-hexane, 1,1-di(t-butylperoxy) 3,3,5-trimethyl cyclohexane, and the like, all of which are readily commercially available.

Zinc oxide is also preferably included in the core formulation. Zinc oxide may primarily be used as a weight adjusting filler, and is also believed to participate in the cross-linking of the other components of the core (e.g. as a coagent). Additional processing aids such as dispersants and activators may optionally be included. In particular, zinc stearate may be added as a processing aid (e.g. as an activator). Any of a number of specific gravity adjusting fillers may be included to obtain a preferred total weight of the core 12. Examples of such fillers include tungsten and barium sulfate. All such processing aids and fillers are readily commercially available. The present inventors have found a particularly useful tungsten filler is WP102 Tungsten (having a 3 micron particle size) available from Atlantic Equipment, Bergenfield, N.J.

Table One below provides the ranges of materials included in the preferred code formulations of the present invention.

TABLE ONE
Core Formulation
Component Preferred Range Most Preferred Range
Polybutadiene 100 parts 100 parts
Zinc diacrylate  20-35 phr  25-30 phr
Zinc oxide  0-50 phr  5-15 phr
Zinc stearate  0-15 phr  1-10 phr
Peroxide 0.2-2.5 phr 0.5-1.5 phr
Filler As desired As desired
(e.g. tungsten) (2-14 phr) (10 phr)

In the present invention, the core components are mixed and compression molded in a conventional manner known to those skilled in the art. The finished core 12 preferably has a diameter of about 1.35 to about 1.64 inches for a golf ball 10 having an outer diameter of 1.68 inches, more preferably a diameter of 1.45 inches to 1.55 inches, and most preferably a diameter ranging from 1.49 inch to 1.515 inch. The core weight is preferably maintained in the range of about 32 grams to about 40 grams. The core PGA compression is preferably maintained in the range of about 75 points to 120 points, most preferably about 90 points to 110 points, and the most preferred is a PGA compression of 90 or 100 points.

As used herein, the term “PGA compression” is defined as follows:

PGA compression value=180−Riehle compression value

The Riehle compression value is the amount of deformation of a golf ball in inches under a static load of 200 pounds, multiplied by 1000. Accordingly, for a deformation of 0.095 inches under a load of 200 pounds, the Riehle compression value is 95 and the PGA compression value is 85.

In a preferred embodiment, the cover 14 is composed of a thermosetting polyurethane material. Preferably the thermosetting polyurethane material is formed from a blend of polyurethane prepolymers and curing agents such as disclosed in U.S. Pat. No. 6,190,268 which is hereby incorporated by reference in its entirety. However, in an alternative embodiment, the cover 14 is composed of a blend of ionomers, as discussed below in reference to the intermediate layer 16.

The intermediate layer 16 is preferably composed of a thermoplastic material or a blend of thermoplastic materials (e.g. metal containing, non-metal containing or both). Most preferably the intermediate layer 16 is composed of at least one thermoplastic material that contains organic chain molecules and metal ions. The metal ion is sodium, zinc, magnesium, lithium, potassium, cesium, or any polar metal ion that serves as a reversible cross-linking site and results in high levels of resilience and impact resistance. Suitable commercially available thermoplastic materials are ionomers based on ethylene copolymers and containing carboxylic acid groups with metal ions such as described above. The acid levels in such suitable ionomers may be neutralized to control resiliency, impact resistance and other like properties. In addition, other fillers with ionomer carriers may be used to modify the specific gravity of the thermoplastic material blend to adjust the moment of inertia and other like properties. Exemplary commercially available thermoplastic materials suitable for use in an intermediate layer 16 of a golf ball 10 of the present invention include, for example, the following materials and/or blends of the following materials: HYTREL® and/or HYLENE® products from DuPont, Wilmington, Del., PEBAX® products from Elf Atochem, Philadelphia, Pa., SURLYN® products from DuPont, and/or ESCOR® or IOTEK® products from Exxon Chemical, Houston, Tex.

The Shore D hardness of the intermediate layer 16 is preferably 50 to 75. It is preferred that the intermediate layer 16 have a hardness of between about 65-70 Shore D. In a preferred embodiment, the intermediate layer 16 has a Shore D hardness of about 68. It is also preferred that the intermediate layer 16 is composed of a blend of SURLYN® ionomer resins.

SURLYN® 8150, 9150, and 6320 are, respectively, an ionomer resin composed of a sodium neutralized ethylene/methacrylic acid, an ionomer resin composed of a zinc neutralized ethylene/methacrylic acid, and an ionomer resin composed of a terpolymer of ethylene, methacrylic acid and n-butyl acrylate partially neutralized with magnesium, all of which are available from DuPont, Polymer Products, Wilmington, Del. It is well known in the art that one may vary the amounts of the different types of resins in order to adjust the hardness of the final material.

The intermediate layer 16 may include a predetermined amount of a baryte mixture. The baryte mixture is included as 8 or 9 parts per hundred parts of the ionomer resins. One preferred baryte mixture is composed of 80% barytes and 20% of an ionomer, and is available from Americhem, Inc., Cuyahoga Falls, Ohio, under the trade designation 38534X1.

A preferred embodiment of the golf ball 10 of the present invention is a solid three-piece golf ball. However, an alternative embodiment has a wound layer between the intermediate layer 16 and the cover 14 such as disclosed in U.S. Pat. No. 6,379,266, filed on Mar. 16, 2000, for a Four Piece Golf Ball, which pertinent parts are hereby incorporated by reference. The core 12 is composed of a polybutadiene blend as described above. The core 12 has a diameter between 1.45 inches and 1.55 inches, and most preferably 1.49 inches. The core 12 has a PGA compression of preferably 90 points or 100 points. The intermediate layer 16 is preferably composed of substantially equal parts of the ionomer resins, SURLYN 8150 and SURLYN 9150, with a range of 40 to 60 parts of SURLYN 8150 to a range of 60 to 40 of SURLYN 9150. The ionomer blend of materials is preferably injection molded over the core to a thickness of between 0.040 inch to 0.080 inch, and most preferably 0.075 inch. The Shore D hardness of the materials of the intermediate layer 16 is preferably between 62 to 75 Shore D as measured according to ASTM D-2290, except the measurement is performed on the curved surface of the intermediate layer 16 by tearing off the cover 14 and using an Instron Shore D Hardness measurement device. The cover 14 is preferably composed of thermosetting polyurethane material, preferably formed from a tri-blend of polyurethane prepolymers and curing agents. The cover 14 is preferably cast over the intermediate layer 16 and core 12, in a casting process such as described in U.S. Pat. No. 6,395,218 for a System And Method For Forming A Thermoset Golf Ball Cover, filed on Feb. 01, 2000 and hereby incorporated by reference. The cover 14 preferably has a thickness of between 0.015 inch to 0.030 inch, and most preferably 0.020 inch. The Shore D hardness of the golf ball 10, as measured on the golf ball is between 55 Shore D points to 70 Shore D points, and most preferably 65 Shore D points. The hardness of the golf ball 10 is measured using an Instron Shore D Hardness measurement device wherein the golf ball 10 is placed within a holder and the pin is lowered to the surface to measure the hardness. The average of five measurements is used in calculating the ball hardness. The ball hardness is preferably measured on a land area of the cover 14. The surface geometry of the exemplary golf balls 10 of Table Three is preferably 382 dimples arranged as described in U.S. Pat. Number 6,224,499. The overall diameter of the golf ball is approximately 1.68 inches, and the weight is approximately 45.5 grams. Those skilled in the pertinent art will recognize that a golf ball 10 with a larger diameter such as 1.70 inches is within the scope and spirit of the present invention. The preferred golf ball 10 has a COR of approximately 0.8152 at 143 feet per second, and an initial velocity between 250 feet per second to 255 feet per second under USGA initial velocity conditions.

Several golf balls 10 of the present invention were tested for COR against golf balls currently on the market. The balls were kept in an incubator at a constant temperature of 23 degrees Celsius for at least three hours before they were tested for COR performance. To test the COR of a particular ball type, six balls were loaded into a COR machine and fired one at a time through a cannon via compressed air. The test begins by firing the first balls at approximately 80 feet per second, and ends with the last ball firing approximately 180 feet per second. Each of the six balls are fired eight times for a combined 48 shots over the range of speeds between 80-180 feet per second.

To determine the COR of a golf ball at any specific incoming velocity, a third-order polynomial curve is fit through the 48 data points and constrained at the origin. This polynomial fit is extremely accurate (with an R^2 fit value greater than 0.999) and allows the COR to be determined at an exact speed of 143 fps without actually having to achieve that specific cannon velocity. The COR is then obtained by plugging in 143 into the third-order polynomial equation and taking the ratio of outgoing velocity to incoming velocity to calculate the coefficient of restitution. For reference to ADC COR machine see Automated Design Corporation web-site at www.automateddesign.com.

TABLE TWO
Ball Core Ball
# # Size Size Comp. Shore D COR @
Ball Covers Dimples (inches) (inches) (PGA) Hardness 143 fps
Callaway Rule 35 Firmfeel 2 382 1.680 1.515 99 57 0.7782
Callaway Rule 35 Softfeel 2 382 1.680 1.489 90 54 0.7895
Titleist Pro V1 392 2 392 1.683 1.550 89 63 0.7822
Titleist Professional 1 392 1.680 N/A 93 56 0.7735
Strata Tour Professional 2 422 1.683 1.480 94 46 0.7886
Nike Tour Accuracy 2 392 1.682 1.439 90 49 0.7830
Maxfli Revolution 1 432 1.680 1.340 89 54 0.7781
Bridgestone B::M 2 432 1.682 1.287 99 68 0.7964
Titleist HP Tour 1 416 1.683 1.590 83 61 0.7713
Titleist DT Distance 1 392 1.681 1.580 95 70 0.7930
Pinnacle Ti Extreme 1 392 1.682 1.496 114 68 0.7976
Wilson Smart Core Straight 1 432 1.679 1.509 89 71 0.8001
Distance
Top Flite 2000 Extra Long 1 422 1.681 1.529 92 72 0.7882
Precept MC Spin 392 1 392 1.684 1.537 85 53 0.7763
Precept MC Lady 1 432 1.681 1.515 81 65 0.7960
Slazenger 408dr Raw 1 408 1.680 1.500 106 68 0.8012
Distance 3

Table Two illustrates the results of COR testing of commercially available golf balls. The Callaway Golf RULE 35® golf balls (FIRMFEEL and SOFTFEEL), the Titleist PRO V1 392, Nike TOUR ACCURACY, Spalding STRATA TOUR PROFESSIONAL, and the Bridgestone BIIM, are all solid three-piece golf balls. The Maxfli REVOLUTION and the Titleist PROFESSIONAL are both wound golf balls. The other golf balls are two-piece golf balls. All of the non-two-piece golf balls had a COR below 0.797 at a speed of 143 fps, and all of the golf balls of Table Two had a COR below 0.802 at speed of 143 fps. Only the Callaway Golf RULE 35® golf balls (FIRMFEEL and SOFTFEEL) and the Titleist PRO V1 golf balls have a cover thickness below 0.044 inch.

Table Three illustrates the COR calculation of ten exemplary golf balls 10 of the present invention. The four columns are the COR at speeds of 80 feet per second, 125 feet per second, 143 feet per second and 180 feet per second. The COR at 143 feet per second for each of the golf balls 10 of the present invention is at least 0.8115, and most have a COR over 0.815. FIG. 2 illustrates the curve fitting operation that generated the numbers for Table Three.

TABLE THREE
COR
Ball 80 125 143 180
1. 86.59% 83.26% 81.53% 77.26%
2. 86.22% 83.19% 81.51% 77.23%
3. 86.54% 83.55% 81.94%  77.9%
4. 86.26% 83.34% 81.81% 78.02%
5. 86.31% 83.03% 81.34% 77.22%
6. 85.62% 82.68% 81.15% 77.33%
7. 86.41% 83.16% 81.59%  77.9%
8.  85.9%  83.% 81.52% 77.91%
9. 86.46% 83.22% 81.61% 77.73%
10. 85.08% 80.66% 78.65% 74.09%

Table Four illustrates the properties of the ten exemplary golf balls 10 of Table Three. Each of the ten golf balls was composed of a solid polybutadiene core 12, an intermediate layer 16 composed of a blend of ionomers, and a thermosetting polyurethane cover 14 having a thickness of 0.020 inch. The PGA compression of the cores 12 of each of the ten golf balls 10 varied from 90 to 100 points. The diameter of each of the cores 12 varied from 1.490 inches to 1.515 inches. The thickness of each of the intermediate layers 16 varies from 0.0525 inch to 0.75 inch. The cover material is a cast thermosetting polyurethane (CTPU) and the cover hardness is the hardness of the material measured on a plaque according to ASTM D-2290, as opposed to the ball hardness which is measured on the ball.

TABLE FOUR
Core Core Inter. Cover Cover Cover
Ball Comp. Diameter Thickness Material Hardness Thickness
1 90 1.515 .0625 CTPU 45 D 0.020
2 90 1.490 .075 CTPU 45 D 0.020
3 100 1.515 .0625 CTPU 45 D 0.020
4 100 1.490 .075 CTPU 45 D 0.020
5 90 1.515 .0625 CTPU 60 D 0.020
6 90 1.490 .075 CTPU 60 D 0.020
7 100 1.515 .0625 CTPU 60 D 0.020
8 100 1.490 .075 CTPU 60 D 0.020
9 90 1.490 .075 CTPU 45 D 0.020
10 70 1.515 .0525 CTPU 53 D 0.030

From the foregoing it is believed that those skilled in the pertinent art will recognize the meritorious advancement of this invention and will readily understand that while the present invention has been described in association with a preferred embodiment thereof, and other embodiments illustrated in the accompanying drawings, numerous changes, modifications and substitutions of equivalents may be made therein without departing from the spirit and scope of this invention which is intended to be unlimited by the foregoing except as may appear in the following appended claims. Therefore, the embodiments of the invention in which an exclusive property or privilege is claimed are defined in the following appended claims.

Claims (5)

1. A golf ball comprising:
a solid core composed of a polybutadiene blend, having a PGA compression ranging from 100 points to 110 points, and having a diameter ranging from 1.35 inches to 1.64 inches, the core having a mass ranging from about 32 grams to about 40 grams;
an intermediate layer disposed above the core, the intermediate layer composed of an ionomer material, having a Shore D hardness ranging from 50 points to 75 points as measured on the curved surface of the intermediate layer, and the intermediate layer having a thickness ranging from 0.040 inch to 0.09 inch; and
a cover disposed over the intermediate layer, the cover composed of a polyurethane material, the cover having a thickness ranging from 0.020 inch to 0.0375 inch;
wherein the golf ball has a coefficient of restitution or 143 feet per second greater than 0.7964, and an USGA initial velocity of less than 255.0 feet per second, and the golf ball has a ball Shore D hardness ranging from 50 points to 75 points as measured on the surface of the golf ball.
2. The golf ball according to claim 1 wherein the cover has a thickness ranging from 0.025 inch to 0.035 inch.
3. The golf ball according to claim 1 wherein the cover has a thickness of 0.030 inch.
4. The golf ball according to claim 1 wherein the core has a PGA compression of 110 points.
5. The golf ball according to claim 1 wherein the golf ball has a coefficient of restitution at 143 feet per second greater than 0.8150.
US10604430 1999-07-27 2003-07-21 Golf ball with high coefficient of restitution Active 2019-10-30 US6932721B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US09361912 US6190268B1 (en) 1999-07-27 1999-07-27 Golf ball having a polyurethane cover
US09710591 US6422954B1 (en) 1999-07-27 2000-11-11 Golf ball having a polyurethane cover
US09877651 US6443858B2 (en) 1999-07-27 2001-06-08 Golf ball with high coefficient of restitution
US09682792 US6478697B2 (en) 1999-07-27 2001-10-19 Golf ball with high coefficient of restitution
US10063861 US6595872B2 (en) 1999-07-27 2002-05-20 Golf ball with high coefficient of restitution
US10604430 US6932721B2 (en) 1999-07-27 2003-07-21 Golf ball with high coefficient of restitution

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10604430 US6932721B2 (en) 1999-07-27 2003-07-21 Golf ball with high coefficient of restitution
US10708501 US6913549B2 (en) 1999-07-27 2004-03-08 Golf ball with high coefficient of restitution

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10063861 Continuation US6595872B2 (en) 1999-07-27 2002-05-20 Golf ball with high coefficient of restitution

Publications (2)

Publication Number Publication Date
US20040121854A1 true US20040121854A1 (en) 2004-06-24
US6932721B2 true US6932721B2 (en) 2005-08-23

Family

ID=24741154

Family Applications (3)

Application Number Title Priority Date Filing Date
US09682792 Active US6478697B2 (en) 1999-07-27 2001-10-19 Golf ball with high coefficient of restitution
US10063861 Active US6595872B2 (en) 1999-07-27 2002-05-20 Golf ball with high coefficient of restitution
US10604430 Active 2019-10-30 US6932721B2 (en) 1999-07-27 2003-07-21 Golf ball with high coefficient of restitution

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US09682792 Active US6478697B2 (en) 1999-07-27 2001-10-19 Golf ball with high coefficient of restitution
US10063861 Active US6595872B2 (en) 1999-07-27 2002-05-20 Golf ball with high coefficient of restitution

Country Status (2)

Country Link
US (3) US6478697B2 (en)
GB (1) GB0224477D0 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6913549B2 (en) * 1999-07-27 2005-07-05 Callaway Golf Company Golf ball with high coefficient of restitution
US6190268B1 (en) * 1999-07-27 2001-02-20 Callaway Golf Company Golf ball having a polyurethane cover
US20030199340A1 (en) * 1999-07-27 2003-10-23 Callaway Golf Company [GOLF BALL HAVING A POLYURETHANE COVER(Corporate Docket Number PU2156 )]
US6478697B2 (en) * 1999-07-27 2002-11-12 Callaway Golf Company Golf ball with high coefficient of restitution
US6443858B2 (en) * 1999-07-27 2002-09-03 Callaway Golf Company Golf ball with high coefficient of restitution
US6634965B2 (en) * 2001-01-23 2003-10-21 Callaway Golf Company Golf ball
US20030153409A1 (en) * 2001-01-23 2003-08-14 Callaway Golf Company Golf Ball
US6620060B2 (en) * 2001-01-23 2003-09-16 Callaway Golf Company Golf ball
US6762273B2 (en) * 2002-05-31 2004-07-13 Callaway Golf Company Thermosetting polyurethane material for a golf ball cover
US20040142766A1 (en) * 2003-01-17 2004-07-22 Chris Savarese Apparatuses, methods and systems relating to findable golf balls
US8152653B2 (en) 2004-05-07 2012-04-10 Acushnet Company Thick inner cover multi-layer golf ball
US7244194B2 (en) * 2004-05-07 2007-07-17 Acushnet Company Thick inner cover multi-layer golf ball
US20080153629A1 (en) * 2004-05-07 2008-06-26 Sullivan Michael J Thick Outer Cover Layer Golf Ball
US7004856B2 (en) * 2004-05-07 2006-02-28 Acushnet Company Thick inner cover multi-layer golf ball
US7819761B2 (en) 2005-01-26 2010-10-26 Taylor Made Golf Company, Inc. Golf ball having cross-core hardness differential and method for making it
US7874940B2 (en) * 2005-07-13 2011-01-25 Taylor Made Golf Company, Inc. Extrusion method for making golf balls
GB0515353D0 (en) * 2005-07-27 2005-08-31 Psimedica Ltd Food
US20070100085A1 (en) * 2005-11-03 2007-05-03 Taylor Made Golf Company, Inc. Amide-modified polymer compositions and sports equipment made using the compositions
US8030411B2 (en) 2005-12-21 2011-10-04 Taylor Made Golf Company, Inc. Polymer compositions comprising peptizers, sports equipment comprising such compositions, and method for their manufacture
US7879968B2 (en) * 2006-10-17 2011-02-01 Taylor Made Golf Company, Inc. Polymer compositions and golf balls with reduced yellowing
US8211976B2 (en) 2007-12-21 2012-07-03 Taylor Made Golf Company, Inc. Sports equipment compositions comprising a polyurethane, polyurea or prepolymer thereof and a polyfunctional modifier
US8096899B2 (en) 2007-12-28 2012-01-17 Taylor Made Golf Company, Inc. Golf ball comprising isocyanate-modified composition
US20100125002A1 (en) * 2008-11-14 2010-05-20 Taylor Made Golf Company, Inc. Resin compositions incorporating modified polyisocyanate and method for their manufacture and use
US8629228B2 (en) 2009-12-31 2014-01-14 Taylor Made Golf Company, Inc. Ionomer compositions for golf balls
US8575278B2 (en) * 2009-12-31 2013-11-05 Taylor Made Golf Company, Inc. Ionomer compositions for golf balls
US20110159991A1 (en) * 2009-12-31 2011-06-30 Taylor Made Golf Company, Inc. Golf ball composition
US8674023B2 (en) * 2009-12-31 2014-03-18 Taylor Made Golf Company, Inc. Ionomer compositions for golf balls
EP2595710A1 (en) 2010-07-21 2013-05-29 Nike International Ltd. Golf ball and method of manufacturing a golf ball
US7993213B1 (en) * 2010-08-25 2011-08-09 Craig A. Drinko Golf club
US9278260B1 (en) 2015-04-17 2016-03-08 Callaway Golf Company Low compression three-piece golf ball with an aerodynamic drag rise at high speeds
US9789366B1 (en) 2016-09-28 2017-10-17 Callaway Golf Company Graphene core for a golf ball

Citations (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US721462A (en) 1902-05-26 1903-02-24 Francis H Richards Manufacture of playing-balls.
US2940128A (en) 1960-06-14 Manufacture of rubber covered balls
US3034791A (en) 1960-04-26 1962-05-15 Du Pont Polyurethane golf ball covers
US3112521A (en) 1961-03-08 1963-12-03 Louis F Muccino Apparatus for covering golf balls
US3130102A (en) 1960-05-19 1964-04-21 Dunlop Rubber Co Method of making golf balls with covers of polyurethane
US3147324A (en) 1960-10-20 1964-09-01 Louis F Muccino Methods of covering golf balls
US3177280A (en) 1960-05-23 1965-04-06 Dunlop Rubber Co Process for the manufacture of polyurethane coated balls
US3616101A (en) 1969-12-05 1971-10-26 Brunswick Corp Ball or other article of manufacture having a liquid center
US3979126A (en) 1971-01-27 1976-09-07 Acushnet Company Ball and process and composition of matter for production thereof
US3989568A (en) 1974-11-21 1976-11-02 Acushnet Company Polyurethane covered golf balls
US4062825A (en) 1974-10-29 1977-12-13 Bridgestone Tire Company, Ltd. Polyurethane composition having improved tear strength and process for preparation thereof
US4123061A (en) 1976-05-20 1978-10-31 Acushnet Company Ball and process and composition of matter for production thereof
US4248432A (en) 1979-07-16 1981-02-03 The B. F. Goodrich Company Golf ball
US4274637A (en) 1979-01-31 1981-06-23 Questor Corporation Golf ball having cellular cover
US4321183A (en) 1978-09-26 1982-03-23 Abbott Laboratories Solid golf ball center with block butadiene-styrene polymers
US4349657A (en) 1981-09-28 1982-09-14 The B. F. Goodrich Company Polyurethane process
US4431193A (en) 1981-08-25 1984-02-14 Questor Corporation Golf ball and method of making same
US4442282A (en) 1983-06-20 1984-04-10 The B. F. Goodrich Company Polyurethane covered golf balls
US4650193A (en) 1984-12-10 1987-03-17 Spalding & Evenflo Companies, Inc. Golf ball
US4674751A (en) 1984-12-10 1987-06-23 Spalding & Evenflo Companies, Inc. Golf ball having improved playability properties
US4870142A (en) 1988-06-07 1989-09-26 Genesco Inc. Novel urethane polymer alloys with reactive epoxy functional groups
US5006297A (en) 1989-02-22 1991-04-09 Acushnet Company Method of molding polyurethane covered golf balls
US5098105A (en) 1989-12-13 1992-03-24 Lisco, Inc. Golf ball compositions
US5159053A (en) 1989-08-28 1992-10-27 The B. F. Goodrich Company Polyurethane for use in electrostatic dissipating applications
US5184828A (en) 1990-06-01 1993-02-09 Ilya Co. Ltd. Solid three-piece golf ball
US5209485A (en) 1991-09-23 1993-05-11 Lisco, Inc. Restricted flight golf ball
US5368304A (en) 1993-04-28 1994-11-29 Lisco, Inc. Low spin golf ball
US5484870A (en) 1993-06-28 1996-01-16 Acushnet Company Polyurea composition suitable for a golf ball cover
US5682230A (en) 1995-11-01 1997-10-28 United States Golf Association Test range for determining the aerodynamic characteristics of a ball in flight
US5688191A (en) 1995-06-07 1997-11-18 Acushnet Company Multilayer golf ball
US5692974A (en) 1995-06-07 1997-12-02 Acushnet Company Golf ball covers
US5703193A (en) 1996-06-03 1997-12-30 Uniroyal Chemical Company, Inc. Removal of unreacted diisocyanate monomer from polyurethane prepolymers
US5733428A (en) 1992-07-06 1998-03-31 Acushnet Company Method for forming polyurethane cover on golf ball core
US5779562A (en) 1993-06-01 1998-07-14 Melvin; Terrence Multi-core, multi-cover golf ball
US5797808A (en) 1996-04-03 1998-08-25 Bridgestone Sports Co., Ltd. Wound golf ball
US5803831A (en) 1993-06-01 1998-09-08 Lisco Inc. Golf ball and method of making same
US5813923A (en) 1995-06-07 1998-09-29 Acushnet Company Golf ball
US5816940A (en) 1996-04-03 1998-10-06 Bridgestone Sports Co., Ltd. Wound golf ball
US5824746A (en) 1995-01-24 1998-10-20 Acushnet Company Golf balls incorporating foamed metallocene catalyzed polymer
US5830085A (en) 1996-03-29 1998-11-03 Bridgestone Sports Co., Ltd. Three-piece solid golf ball
US5830087A (en) 1995-06-26 1998-11-03 Lisco, Inc. Multi-layer golf ball
US5833553A (en) 1993-04-28 1998-11-10 Lisco, Inc. Golf ball
US5885172A (en) 1997-05-27 1999-03-23 Acushnet Company Multilayer golf ball with a thin thermoset outer layer
US5888151A (en) * 1996-07-12 1999-03-30 Bridgestone Sports Co., Ltd. Wound golf ball
US5908358A (en) 1995-06-07 1999-06-01 Acushnet Company Urethane golf ball covers using epoxy compounds with a polyamine or glycol as curing agents
US5929189A (en) 1996-04-03 1999-07-27 Bridgestone Sports Co., Ltd. Golf ball
US5935021A (en) 1996-11-13 1999-08-10 Bridgestone Sports Co., Ltd. Golf ball
US5947842A (en) 1995-06-07 1999-09-07 Acushnet Company Multi-layer low-spin golf ball
US5961401A (en) 1996-11-05 1999-10-05 Bridgestone Sports Co., Ltd. Golf balls
US5965669A (en) 1995-06-07 1999-10-12 Acushnet Company Multi-layer golf ball and composition
US5971870A (en) 1997-11-21 1999-10-26 Sullivan Michael J Golf ball with soft core
US5981658A (en) 1995-01-24 1999-11-09 Acushnet Company Golf ball incorporating grafted metallocene catalyzed polymer blends
US5984806A (en) 1997-01-13 1999-11-16 Spalding Sports Worldwide, Inc. Perimeter weighted golf ball with visible weighting
US5993968A (en) 1997-04-18 1999-11-30 Bridgestone Sports Co., Ltd. Wound golf ball
US6015356A (en) 1997-01-13 2000-01-18 Lisco, Inc. Golf ball and method of producing same
US6037419A (en) 1996-11-12 2000-03-14 Bridgestone Sports Co., Ltd. Golf ball
US6042488A (en) 1995-06-15 2000-03-28 Spalding Sports Worldwide, Inc. Multi-layer golf ball and method of making same
US6054550A (en) 1997-04-18 2000-04-25 Bridgestone Sports Co., Ltd. Wound golf ball
US6057403A (en) 1993-06-01 2000-05-02 Spalding Sports Worldwide, Inc Dual cores for golf balls
US6126558A (en) 1998-03-16 2000-10-03 Bridgestone Sports Co., Ltd. Multi-piece solid golf ball
US6213892B1 (en) 1999-07-27 2001-04-10 Callaway Golf Company Multi-layer golf ball
US6309313B1 (en) 1999-09-15 2001-10-30 Uniroyal Chemical Company, Inc. Low cost, resilient, shear resistant polyurethane elastomers for golf ball covers
US6595872B2 (en) * 1999-07-27 2003-07-22 Callaway Golf Company Golf ball with high coefficient of restitution
US6663509B2 (en) * 1993-06-01 2003-12-16 Callaway Golf Company Multilayer golf ball with filled inner layer having dual core, liquid core, or wound core

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1047254A (en)
GB869490A (en) 1958-10-03 1961-05-31 Louis Ferdinand Muccino Methods of forming the outer covering of golf balls and products thereof
US3098658A (en) 1958-11-12 1963-07-23 Goodrich Co B F Golf ball having a polyetherurethane core
GB952212A (en) 1961-03-03 1964-03-11 Louis Ferdinand Muccino Method of covering golf balls
GB997663A (en) 1961-05-03 1965-07-07 Dunlop Rubber Co Improvements in or relating to articles
GB1136166A (en) 1965-02-23 1968-12-11 Holley Plastics Company Ball and process for production thereof
EP0467622B1 (en) 1990-07-20 1995-04-12 Acushnet Company Polyurethane golf ball
US6287217B1 (en) * 1993-06-01 2001-09-11 Spalding Sports Worldwide, Inc. Multi-layer golf ball
JP3564641B2 (en) 1993-06-01 2004-09-15 ザ、トップ・フライト、ゴルフ、カムパニ Improved multi-layer golf ball
DE69619963D1 (en) 1995-08-30 2002-04-25 Koninkl Philips Electronics Nv Signal processor with reduced complexity and receiver with such a signal processor
US5816937A (en) 1996-01-12 1998-10-06 Bridgestone Sports Co., Ltd. Golf ball having a multilayer cover
US5919100A (en) * 1996-03-11 1999-07-06 Acushnet Company Fluid or liquid filled non-wound golf ball
JP3778224B2 (en) * 1996-04-03 2006-05-24 ブリヂストンスポーツ株式会社 Wound golf ball
JPH09271534A (en) * 1996-04-03 1997-10-21 Bridgestone Sports Co Ltd Thread wound golf ball
US6793864B1 (en) 1997-02-26 2004-09-21 Dunlop Sports Polyurethane material for two and three piece golf balls
US7223181B2 (en) 1998-02-04 2007-05-29 Taylormade-Adidas Golf Company Polyurethane material for two and three piece golf balls and method
JPH11276640A (en) * 1998-03-27 1999-10-12 Bridgestone Sports Co Ltd Rubber-thread winding golf ball
US6306049B1 (en) * 1999-03-01 2001-10-23 Acushnet Company Method of improving impact resistance in golf ball core formulations
US6117024A (en) * 1999-04-20 2000-09-12 Callaway Golf Company Golf ball with polyurethane cover
US6190268B1 (en) * 1999-07-27 2001-02-20 Callaway Golf Company Golf ball having a polyurethane cover
US6443858B2 (en) * 1999-07-27 2002-09-03 Callaway Golf Company Golf ball with high coefficient of restitution

Patent Citations (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2940128A (en) 1960-06-14 Manufacture of rubber covered balls
US721462A (en) 1902-05-26 1903-02-24 Francis H Richards Manufacture of playing-balls.
US3034791A (en) 1960-04-26 1962-05-15 Du Pont Polyurethane golf ball covers
US3130102A (en) 1960-05-19 1964-04-21 Dunlop Rubber Co Method of making golf balls with covers of polyurethane
US3177280A (en) 1960-05-23 1965-04-06 Dunlop Rubber Co Process for the manufacture of polyurethane coated balls
US3147324A (en) 1960-10-20 1964-09-01 Louis F Muccino Methods of covering golf balls
US3112521A (en) 1961-03-08 1963-12-03 Louis F Muccino Apparatus for covering golf balls
US3616101A (en) 1969-12-05 1971-10-26 Brunswick Corp Ball or other article of manufacture having a liquid center
US3979126A (en) 1971-01-27 1976-09-07 Acushnet Company Ball and process and composition of matter for production thereof
US4062825A (en) 1974-10-29 1977-12-13 Bridgestone Tire Company, Ltd. Polyurethane composition having improved tear strength and process for preparation thereof
US3989568A (en) 1974-11-21 1976-11-02 Acushnet Company Polyurethane covered golf balls
US4123061A (en) 1976-05-20 1978-10-31 Acushnet Company Ball and process and composition of matter for production thereof
US4321183A (en) 1978-09-26 1982-03-23 Abbott Laboratories Solid golf ball center with block butadiene-styrene polymers
US4274637A (en) 1979-01-31 1981-06-23 Questor Corporation Golf ball having cellular cover
US4248432A (en) 1979-07-16 1981-02-03 The B. F. Goodrich Company Golf ball
US4431193A (en) 1981-08-25 1984-02-14 Questor Corporation Golf ball and method of making same
US4349657A (en) 1981-09-28 1982-09-14 The B. F. Goodrich Company Polyurethane process
US4442282A (en) 1983-06-20 1984-04-10 The B. F. Goodrich Company Polyurethane covered golf balls
US4650193A (en) 1984-12-10 1987-03-17 Spalding & Evenflo Companies, Inc. Golf ball
US4674751A (en) 1984-12-10 1987-06-23 Spalding & Evenflo Companies, Inc. Golf ball having improved playability properties
US4870142A (en) 1988-06-07 1989-09-26 Genesco Inc. Novel urethane polymer alloys with reactive epoxy functional groups
US5006297A (en) 1989-02-22 1991-04-09 Acushnet Company Method of molding polyurethane covered golf balls
US5159053A (en) 1989-08-28 1992-10-27 The B. F. Goodrich Company Polyurethane for use in electrostatic dissipating applications
US5098105A (en) 1989-12-13 1992-03-24 Lisco, Inc. Golf ball compositions
US5184828A (en) 1990-06-01 1993-02-09 Ilya Co. Ltd. Solid three-piece golf ball
US5184828B1 (en) 1990-06-01 1995-07-04 Ilya Co Ltd Solid three-piece golf ball
US5209485A (en) 1991-09-23 1993-05-11 Lisco, Inc. Restricted flight golf ball
US6042768A (en) 1992-07-06 2000-03-28 Acushnet Company Method for forming polyurethane cover on golf ball core
US5888437A (en) 1992-07-06 1999-03-30 Acushnet Company Method for forming polyurethane cover on golf ball core
US5733428A (en) 1992-07-06 1998-03-31 Acushnet Company Method for forming polyurethane cover on golf ball core
US5833553A (en) 1993-04-28 1998-11-10 Lisco, Inc. Golf ball
US5368304A (en) 1993-04-28 1994-11-29 Lisco, Inc. Low spin golf ball
US5803831A (en) 1993-06-01 1998-09-08 Lisco Inc. Golf ball and method of making same
US6057403A (en) 1993-06-01 2000-05-02 Spalding Sports Worldwide, Inc Dual cores for golf balls
US5779562A (en) 1993-06-01 1998-07-14 Melvin; Terrence Multi-core, multi-cover golf ball
US6663509B2 (en) * 1993-06-01 2003-12-16 Callaway Golf Company Multilayer golf ball with filled inner layer having dual core, liquid core, or wound core
US5484870A (en) 1993-06-28 1996-01-16 Acushnet Company Polyurea composition suitable for a golf ball cover
US5824746A (en) 1995-01-24 1998-10-20 Acushnet Company Golf balls incorporating foamed metallocene catalyzed polymer
US5981658A (en) 1995-01-24 1999-11-09 Acushnet Company Golf ball incorporating grafted metallocene catalyzed polymer blends
US5813923A (en) 1995-06-07 1998-09-29 Acushnet Company Golf ball
US5965669A (en) 1995-06-07 1999-10-12 Acushnet Company Multi-layer golf ball and composition
US5947842A (en) 1995-06-07 1999-09-07 Acushnet Company Multi-layer low-spin golf ball
US5692974A (en) 1995-06-07 1997-12-02 Acushnet Company Golf ball covers
US5688191A (en) 1995-06-07 1997-11-18 Acushnet Company Multilayer golf ball
US5908358A (en) 1995-06-07 1999-06-01 Acushnet Company Urethane golf ball covers using epoxy compounds with a polyamine or glycol as curing agents
US6042488A (en) 1995-06-15 2000-03-28 Spalding Sports Worldwide, Inc. Multi-layer golf ball and method of making same
US5830087A (en) 1995-06-26 1998-11-03 Lisco, Inc. Multi-layer golf ball
US5682230A (en) 1995-11-01 1997-10-28 United States Golf Association Test range for determining the aerodynamic characteristics of a ball in flight
US5830085A (en) 1996-03-29 1998-11-03 Bridgestone Sports Co., Ltd. Three-piece solid golf ball
US5929189A (en) 1996-04-03 1999-07-27 Bridgestone Sports Co., Ltd. Golf ball
US5797808A (en) 1996-04-03 1998-08-25 Bridgestone Sports Co., Ltd. Wound golf ball
US5816940A (en) 1996-04-03 1998-10-06 Bridgestone Sports Co., Ltd. Wound golf ball
US5703193A (en) 1996-06-03 1997-12-30 Uniroyal Chemical Company, Inc. Removal of unreacted diisocyanate monomer from polyurethane prepolymers
US5888151A (en) * 1996-07-12 1999-03-30 Bridgestone Sports Co., Ltd. Wound golf ball
US5961401A (en) 1996-11-05 1999-10-05 Bridgestone Sports Co., Ltd. Golf balls
US6037419A (en) 1996-11-12 2000-03-14 Bridgestone Sports Co., Ltd. Golf ball
US5935021A (en) 1996-11-13 1999-08-10 Bridgestone Sports Co., Ltd. Golf ball
US5984806A (en) 1997-01-13 1999-11-16 Spalding Sports Worldwide, Inc. Perimeter weighted golf ball with visible weighting
US6015356A (en) 1997-01-13 2000-01-18 Lisco, Inc. Golf ball and method of producing same
US5993968A (en) 1997-04-18 1999-11-30 Bridgestone Sports Co., Ltd. Wound golf ball
US6054550A (en) 1997-04-18 2000-04-25 Bridgestone Sports Co., Ltd. Wound golf ball
US5885172A (en) 1997-05-27 1999-03-23 Acushnet Company Multilayer golf ball with a thin thermoset outer layer
US5971870A (en) 1997-11-21 1999-10-26 Sullivan Michael J Golf ball with soft core
US6126558A (en) 1998-03-16 2000-10-03 Bridgestone Sports Co., Ltd. Multi-piece solid golf ball
US6213892B1 (en) 1999-07-27 2001-04-10 Callaway Golf Company Multi-layer golf ball
US6595872B2 (en) * 1999-07-27 2003-07-22 Callaway Golf Company Golf ball with high coefficient of restitution
US6309313B1 (en) 1999-09-15 2001-10-30 Uniroyal Chemical Company, Inc. Low cost, resilient, shear resistant polyurethane elastomers for golf ball covers

Also Published As

Publication number Publication date Type
JP2003126302A (en) 2003-05-07 application
US6478697B2 (en) 2002-11-12 grant
GB2381205A (en) 2003-04-30 application
US6595872B2 (en) 2003-07-22 grant
US20040121854A1 (en) 2004-06-24 application
US20020061792A1 (en) 2002-05-23 application
GB0224477D0 (en) 2002-11-27 grant
US20030027665A1 (en) 2003-02-06 application

Similar Documents

Publication Publication Date Title
US6475417B2 (en) Golf ball
US6152834A (en) Multi-layer golf ball
US5324783A (en) Golf ball cover compositions
US5328959A (en) Golf ball cover compositions
US5779561A (en) Golf ball and method of making same
US5586950A (en) Golf ball
US20080312008A1 (en) Solid golf ball
US20100273575A1 (en) Multi-piece solid golf ball
US5795247A (en) Solid golf ball
US5492972A (en) Golf ball cover
US6083119A (en) Multi-layer golf ball
US20070167257A1 (en) Golf ball having specific spin, moment of inertia, lift, and drag relationship
US6431999B1 (en) Golf ball
US6561928B2 (en) Golf ball with multi-layer cover
US6837805B2 (en) Golf ball with multi-layer cover
US6124389A (en) Multilayer golf ball and composition
US6325731B1 (en) Multi-layer golf ball
US5776012A (en) Solid golf ball
US7090798B2 (en) Multilayer golf ball with a thin thermoset outer layer
US6394913B1 (en) Multi-layer golf ball
US6583229B2 (en) Solid golf ball
US6325730B1 (en) Golf ball with soft core
US6287217B1 (en) Multi-layer golf ball
US6695718B2 (en) Golf ball with sulfur cured inner core component
US5816944A (en) Solid golf ball

Legal Events

Date Code Title Description
AS Assignment

Owner name: CALLAWAY GOLF COMPANY, CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YAGLEY, MICHAEL S.;OGG, STEVEN S.;DEWANJEE, PIJUSH K.;AND OTHERS;REEL/FRAME:013812/0306

Effective date: 20011017

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12